Robert f



UNITED STATES PATENT OFFICE.

ROBERT F. BROVER, OF NITW YORK, N. Y.

ROTARY STEAM-ENGINE.

Speccation of Letters Patent No. 27,100, dated February 14, 1860.

To all whom it may concern: (K, K, K, K, K, K, Figs. 1 and 2,) are at- Be it known that I, ROBERT F. BRowER, tached to the hub, (c, Figs. 1 and 2) and as of city, county, and State of New York, well also to a bed plate or frame (L, Figs. 55

have invented a new and Improved Rotary 1 and 2) which holds the piston rod guides,

5 Steam Engine; and I do hereby declare (M, M, Fig. 2.) The bed plate or frame, L, that the following is a full and exact dethat is attached to, the valvular hub, H, and scription thereof. cylinders (K, K, K, &c.,) and the cross head My invention consists of a union, of a slides, M, M, M, &c., has also, either, first, 60 series of steam cylinders with their bases several circular openings, (O, O, O, O, Fig.

abutting directly or obliquely against a cen- 2,) the diameter of each of which, is the ter hub, which constitutes in its arrangeunited measure of double the distance benlent and by its motion, ingress, cut-off and tween the centers of the shaft, A, and of the egress steam valves, as it revolves about an crank pin axis, C, added to the measure of 65 immovable axis, that is eccentric to the centhe diameter of the counter resisting pin ter of motion of the driving wheel, the two or roller, (N, N, N, N, &c., Fig. 2,) which revolving parts being so constructed as to in this case is inserted into the plate (P, afford a continuous and uniform point of Figs. 1 and 2) or arms of the driving wheel, counter resistance to the propelling power W, or, secondly, the bed plate, L, is supplied 70A of the steam as each piston is successively with counter resisting pins or rollers, which acted upon. bear against circular openings in the plate To enablevothers skilled in the mechanic or arms of the driving wheel, or, thirdly, arts to make and use my invention, I here the two principal revolving parts, that is to proceed to describe the characteristic feasay the power creating part and the power 75 tures of my invention, and illustrate the conveying part, may be connected by a series same by the accompanying drawings. of crank connections, the scope of the mo- The characteristic features consist of: tion of which corresponds to the stroke of 1. A shaft (A, Fig. 1) that does not rethe pistons as they revolve about the power volve, having on its end a iixed crank like conveying part. 80 arrangement, (B, C, Fig. 1.) The distance 3. The driving wheel or drum, W, is conbetween the centers of the crank pin axis nected to a hub, (R, Fig. 1,) by a plate, (P, (C, Figs. 1 and 2.) and of the shaft, (A Fig. 1) or arms, which hub and driving Fig. 1) is half the measure of the stroke wheel revolves around the stationary shaft, of the pistons hereinafter noticed. Through A. The piston rods (s, s, s, s, s, s, Figs. 1 85 this shaft (A) (in this particular arrangeand 2) are attached to cross heads (t, t, t,

ment, given for illustration) the crank and t, t', t, Figs. l and 2,) and to shackle or conthe crank pin axis are two distinct steam necting rods (rv, o, o, o, o, o, Figs. 1 and 2,) passa-ges (D, D Figs. 1 and 2) one for inwhich are coupled as at (m, 00, a, as, gress, the other for egress. The crank pin Figs. 1 and 2,) to the interior of the drum 90 axis has openings (e. g., Fig. 2,) on its or driving wheel plate or arms.

sides: on one side, as at e, Fig. 2, to admit I do not confine the application of my steam to pass into the cylinders through the claim to the particular arrangement here valvular hub, (H, Figs. 1 and 2,) on that described, but include sundry arrangements side of the point where the crank pin axis is by which revolving steam power may exert 95 nearest to the periphery of the driving its force on a revolving driving wheel,

- wheel, (WV, Figs. 1 and 2,) where it is dewherein the centers of motion of the rotary sired the steam shall act. On the other side power and driving wheel being eccentric to of the crank pin axis there is an opening each other, yet have a controlling arrange- (g, Fig. 2) to allow the exit of the steam ment substantially as described, by which 100 as soon as each piston successively has been the steam rotary power and the driving driven to its working distance. wheel, maintain a uniform motion.

2. The valvular hub has a steam passage )Vhat I desire to secure by Let-ters Pat- (i, Fig. 2,) to each cylinder. The cylinders ent, is,

The methods or devices, substantially as l separate movable parts, such as valves or described, which serve as steady and regular springs.)

points of counter resistance to the direct action of steam, when employed in a series ROBERT F BROWER' 5 of diverging cylinders, which revolve ec- Witnessed bycentrically to the center of motion of the THo. J. POPE,

driving Wheel, (Without the aid of any other GEORGE PLACE. 

